The structural deformation during Cenozoic along north margin of southwest-depressionin Tarim Basin is controlled by about S-N direction compressive stress field. It can be dividedinto two segments in terms of the deformational styles. The west segment is called frontalsouth Tianshan Moutains structural deformation region which is related to the southwardpush-compression of south Tianshan Mountains thrust -fold belt. and the.superimposion ofwest Kunlun mountains fault-fold belt. Its deformational styles include: lubricate fault assemblage

fault-bent anticlille

structural delta belt and baffle fold. The east one is callednorth Maigaiti slope structural deformation region which is controlled by Selibuya fault andMazatage fault. Its deformation styles include a fault-anticline belt along the main fault and acomplex wrench fault belt.